| Proposal ID | 074437 |
| Title | Constraining X-ray Absorption in Emergent BAL Quasars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0744370201 |
| DOI | https://doi.org/10.5270/esa-v1l70e0 |
| Principal Investigator, PI | Dr Paola Rodriguez Hidalgo |
| Abstract | Quasar outflows are important for their feedback on galaxy evolution and blackhole growth. These outflows are observed as broad UV absorption lines (BALs) inquasars, reaching velocities >0.1c. In radiative acceleration models,UV-absorbing gas must be shielded by X-ray absorbing gas to reach suchvelocities and, typically, BAL quasars are indeed X-ray-weaker than non-BALquasars. However, recent observations are shaking our understanding on how theX-ray and UV absorbers are connected. We propose to re-observe with XMM-Newtonthree z~2 quasars that did not display UV absorption at the time of the firstXMM-Newton observations, but that have recently developed new BAL troughs. Theseobservations will allow us to constrain, for the first time, the X-ray/UV connection on newly emerged BALs. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-11-08T14:59:05Z/2015-05-01T17:39:40Z |
| Version | PPS_NOT_AVAILABLE |
| Mission Description | The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2016-05-20T22:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "emergent bal quasars", "display uv absorption", "uv absorbing gas", "xray absorbing gas", "XMM", "uv absorbers", "bal quasars", "radiative acceleration models", "indeed xray weaker", "constraining xray absorption", "uv connection", "bal troughs", "xmm newton", "galaxy evolution", "quasar outflows", "xmm newton z", "XMM-Newton", "blackhole growth", "emerged bals" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Paola Rodriguez Hidalgo, 2016, 'Constraining X-ray Absorption in Emergent BAL Quasars', PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.5270/esa-v1l70e0 |